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WorksheetsHuman gas exchange - ventilation
Total questions: 18
Worksheet time: 10mins
What is the process of breathing called?
(a)
The (a) intercostal muscles contract during expiration
The (a) intercostal muscles relaxes during inspiration
Which process is an active process
Inspiration
Expiration
Both
Neither
Contraction of the external intercostal muscles and the diaphragm leads to
Increase in the pressure of the thoracic cavity and lungs
Increase in the pressure of the lungs
Decrease in the pressure of the thoracic cavity and lungs
Increase in the pressure of the thoracic cavity
Gases moves from an area of (a) to low pressure
What does the pressure in the lungs need to get lower than in order for air to enter the lungs?
(a)
Which of the following muscles relax during inhaling?
A only
B only
A and C
B and C|
Which of the following muscles relax during exhaling?
A only
B only
A and C
B and C
Which muscles are contracting during inspiration
A
B
A and C
B and C
Which of the following muscles are contracting during expiration
A
B
C
All of them
During relaxation the diaphragm returns to its original position by elastic (a)
What piece of apparatus can be used to record the volume of air breathed in and out of the lungs
(a)
Impulses are sent to this part of the brain to control the rate and depth of breathing
(a)
Which letter corresponds to the volume of air breathed in or out of the lungs per breath
A
B
C
D
Which letter corresponds to the maximum volume of air that can be forcibly expired after a maximal intake of air
H
F
G
A
Which letter corresponds to the volume of air remaining in the lungs at the end of a maximal expiration
C
D
F
H
Pulmonary ventilation rate = _____ ____________ x breathing rate/breaths per minute
(a)
